(PHP 4, PHP 5, PHP 7, PHP 8)
dba_exists — Check whether key exists
$key
, resource $dba
): bool
dba_exists() checks whether the specified
key
exists in the database.
key
The key the check is performed for.
dba
The database handler, returned by dba_open() or dba_popen().
Returns true
if the key exists, false
otherwise.